1. Tuesday, October 3, 2017
Warm-Up: Explain density in your own words. What does it mean to be “more dense” than another object?
Learning Target: I can conduct tests to identify the solids in the mixture.
Success Criteria: I will be successful when I can accurately explain the physical properties (density, etc.) of the solids.
Plan for Today
1. Vocabulary
2. Density Review/Formulas
3. Identifying the Solids
4. Analysis Questions/Density Practice Problems

2. Vocabulary
Conductivity: allows electricity to flow
Density: how much “stuff” in a certain “space”; measured in g/cm₃ or g/mL
Reactivity: chemical interaction happens; change in color, smell, heat

3. WHAT IS THE FORMULA FOR DENSITY?

4. m = ?
v = ?

5. What are the solids in the mixture?
CHALLENGE QUESTION:
What are the solids in the mixture?

6. This demonstrates ______________________.
Prediction: “IF I place the solids in a cup of water, THEN they will sink (or float) BECAUSE ____________________________________.”
This demonstrates ______________________.
density (compared to water)

7. PROCEDURE and DATA: Materials: Procedure: A-26-31 Data: WS 7.1
* and update WS 5.1!
RED
BLACK
LARGE METAL
SMALL METAL

8. SLIDE metal into vial to avoid splashing!

9. SLIDE metal into vial to avoid splashing!
ANALYSIS:
A-30 Qs 1, 2, 4, & 5!

10. ANALYZE RESULTS BELOW TO IDENTIFY THE FOUR SOLIDS

11. When done:
CLEAN-UP your table, sink, and return ALL materials.
Finish the data chart!
Answer Questions #1, 2, 4, & 5 on page A 30 in your Science Notebook in Complete Sentences!
Still more time? Finish your Simply Symbols Worksheet!

12. Update WS 5.1 with any names and Hazards (yes or no)!
ANALYSIS: A30
Question 1 a.
Tests results should be same as Table 2 b.
red =
HDPE plastic (conduct - , CuCl2 - , floats in H2O)
black =
HDPE plastic (conduct - , CuCl2 - , floats in H2O)
large metal =
not enough data for name yet
small metal =
not enough data for name yet
Question 4
Update WS 5.1 with any names and Hazards (yes or no)!

13. What are the solids in the mixture?
REFLECTION:
What are the solids in the mixture?
A: Solids in mixture are:
red =
black =
large metal =
small metal =
HDPE plastic
HDPE plastic
not enough info
not enough info
HOMEWORK: Finish the Density Problems!